Deiniolen (; Welsh: [dɛinɪˈɔlɛn]; ) is a village in Gwynedd, Wales, at the foot of Elidir Fawr, in Llanddeiniolen Community. Deiniolen has views over Caernarfon (7 miles away) and on a clear day, Holyhead Mountain and occasionally the Wicklow Mountains in Ireland, can be seen. The population of the electoral ward was 1,909 as of 2011, including nearby Dinorwig, with 81.2% of the population speaking Welsh. The community, Llanddeiniolen, has a population of 5,072 as of the 2011 census, the third-largest in Gwynedd.
Ysgol Gynradd Gwaun Gynfi provides Welsh-medium education for children between 3 and 11 years in the village.
The slate industry was an important employer in Deiniolen until the closure of Dinorwig Quarry in 1969.
Distance between:
London to Deiniolen204 Miles / 329 Kms Liverpool to Deiniolen51 Miles / 81 Kms
53.148079,-4.130075